Apparatus for combustion of fuel.



No. 707,627. v Patented Aug. 26, I902. c. ULSTED.

APPARATUS FOR COMBUSTION 0F FUEL.

(Application filed Oct. 26, 1901.)

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No. 707,627. Patented Aug. 26, I902. C. ULSTED. APPARATUS FOR COMBUSTIONOF FUEL.

(Application filed Oct. 28, 190i.)

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BY WWf WITNESSES QWMM- 4 A TTORNEY,

llrTTTED STATES PATENT ()FEICE.

CHRISTIAN OLSTED, OF IVYANDOTTE COUNTY, KANSAS, ASSIGNOR TO EDWARDHAREN, OF KANSAS CITY, KANSAS.

APPARATUS FOR COMBUSTION OFFUEL.

SPECIFICATION forming part of Letters Patent No. 707,627, dated August26, 1902. Application filed October 26, 1901. Serial No. 80,078. (Nomodel.)

To all 1071,0122, it may concern:

Be it known that I, CHRISTIAN OLSTED, a citizen of the United States ofAmerica, residing near Kansas City, in the county of Wyandotte and Stateof Kansas, have invented a new and useful Improvement in Apparatuses forCombustion of Fuel, of Which the following isa specification, referencebeing had therein to the accompanying drawings, forming a part thereof.

My invention relates to improvements in apparatuses for combustion offuel.

It relates particularly to an apparatus designed for heating purposesand .may be applied to heating-stoves, boiler and heating furnaces, andother kinds of heating devices of a similar character.

The object of my invention is to provide an apparatus that may becheaply constructed, efficient in its operation, and adapted to the useof different kinds of fuel.

My invention comprises certain novel features of construction,hereinafter fully described and claimed.

In the accompanying drawings, which illustrate my invention applied toheating-stoves, Figure 1 is a vertical sectional view taken'on thedotted line ab of Fig. 3. Fig. 2 is a horizontal sectional view taken onthe dotted line efof Fig. 1. Fig. 3 is a similar view taken on thedotted line 9 h of Fig. 1. Fig. 4 is a vertical sectional view taken onthe dotted line d of Fig. 5, showing a modified form of a portion of myinvention. Fig. 5 is a view taken at right angles to that shown in Fig.4, the casing being shown in vertical section and the gas-passage inelevation. Fig. 6 is a plan view of the register mechanism. Fig. 7illustrates my invention applied to a cylindrical stove, the view beingpartly in elevation and partly in vertical section. Fig. 8 is ahorizontal sectional View taken on the dotted line 2' of Fig. 7. Fig. 9is a top view of the form shown in Fig. 7, the top of the casing beingremoved.

Similar characters of reference indicate similar parts.

1 indicates the outer casing, which may be of any desirable form. InFigs. 1, 2, and 3 this form is shown as being elliptical. In Figs. 7, S,and 9 it is shown as cylindrical.

The bottom end of the casing is provided with an opening, over which issecured the lower register of ordinary construction, having a stationarydisk 2, provided with openings 3, adapted to register with openings 4,provided in the rotatable horizontal disk 5, which is pivoted bya pin 6to the disk 2. An operating-rod 7 is pivoted at its inner end to thedisk 5 and has its outer end projecting through the casing 1. Byreciprocating the rod 7 forward and backward the holes 3 and 4 may bemoved into or out of register with each other. WVithin the casing l isan inner casing 8 of any desirable form and which forms with the outercasing a hot-airchamber. In the upper end of the casing 8 is anair-inlet opening Upon each side of the airinlet 9 is located apartition, (indicated by 10 and 11,) which extends across the casing anddownwardly toward but not to the bottom thereof. From the bottom of thecasing 8 upwardly extends a transverse partition 12, located between thepartitions 10 andll and forming with the said partitions on each side ofthe partition 12 a passage. for the gases made during combustion. Thispassage is continued to the left of the partition 11 and discharges intoa discharge-opening 13, to whichis fitted a discharge-pipe 14, whichextends vertically through the outer casing 1, and may be providedoutside the casing 1 with a check-draft damper 15 of commonconstruction. The bottom of the casing 8 (indicated by 16) to the rightof the partition 12 is provided with slots or perforations 17, throughwhich the ashes may fall into an ashreceiving chamber 18, provided withan ashdischarge passage 19, which extends horizontally through thecasingl and is providedat its outer end with a closure or cover 20.Through the upperends of the in nerand outer casings extends a verticalfuel-supply passage 21, provided at its upper end with a closure orcover 22. The lowerend of thispassage may be made converging, as shownin Fig. 1; but this is not essential. A damper 23 (shown in Figs.7and 9)maybe used to close the air-inlet opening 9. When this is used, it isnot so essential that the outer casing-joints be made so tight as incases where the damper 23 is dispensed with. In Fig. 71 have shown theair-inlet opening 9 nearer the center of the casing 8 than as shown inFig. 1; but the operation of both are substantially the same. In theform shown in Fig. 7 the partition 10 forms one side of the air-inletpassage 9, and the left side 24: of the said passage is bent to theleftin order to facilitate the mixture of the air and gases.

In Figs. 4 and 5 is shown a modified form of gas-passage. In this formthe partition 10 is so curved as to connect with the air-inlet passage9, the left wall of which extends downward and connects with the lowerend of the partition 11. The upper end of the partition 12 in thismodification is formed into a return-bend, so as'to parallel at this endthe partition 10. The partition 12 in all forms of the invention dividesthe casing 8 into two principal chambers, the chamber to the rightthereof forming the combustion or fuel chamber and the chamber to theleft forming an auxiliary combustion-chamber. An important feature ofall forms of my invention is the placing of the air-inlet adjacent tothe upper end of the partition 12, so that a portion of the air admittedmay pass to the right of the partition and keep up combustion in thefuel-chamber, and a portion of the air admitted through the air-inletpassage 9 may pass to the left of the partition 12 over the top thereof,and thus provide asufficient quantity of oxygen to complete thecombustion first commenced in the fuelchamber. I

My-invention is operated as follows: Fuel is first placed through thepassage 21 into the fuel-chamber, where it rests upon the perforatedhottom of the casing 8. It is then ignited, and the cover 22 is applied.The draftopenings in the bottom of the outer casing are then closedbyoperating the rod 7, and the cap 20 is removed so as to admit airthrough the passage 19, the ash-chamber l8, and the perforated bottom16. When combustion is fairly started, the cap 20 is replaced and thedraft-openings in the bottom of the outer casing and the damper 23 areopened, thus-admitting air through the air-passage 9. A portion of theair so admitted will pass into the combustion-chamber and a portion willbe drawn by'the draft of the flue over the top of the partition 12. Themixed gas and air in the fuel-chamber will pass by the air-inlet passage9 and over the top of the partition 12, thence downward around the lowerend of the partition 11 and thence up and out of the chimney. The mixedgas and air to the left of the partition 12 will mingle with the portionoffresh air and complete combustion of the uncombined carbon willresult, this end being facilitated by proximity of the combiningelements with the hot partition 12.

My invention is capable of many modifications other than what is hereinshown without departing from the spirit of my invention.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is

1. The combination with an outer casing provided in the lower end with adraft-opening, of an inner casing provided at its lower end with anash-receiving chamber, having a discharge-passage leading through theouter casing, a closure for said discharge-opening, a grate in the innercasing above the ashreceiving chamber, a fuel-passage leading throughthe outer and inner casings, an airinlet and a gas-discharge passage inthe upper end of the inner casing, two transverse partitions one on eachside of the said air-inlet and extending downward toward the bottom ofthe inner casing, and a transverse partition located between the saidtwo partitions and extending upward from the bottom of the inner casingto a point below the top there- 'of and above the lower ends of the saidtwo partitions, substantially as described.

2. The combination with an outer casing provided with a draft-opening,ofan inner casing, a fuel-supply passage leading through the two casings,a closure for the said passage, an air-inlet opening in the upper end ofthe inner casing, and a gas-passage leading past the said air-inletandthence downward and thence upward to the exterior of the inner casing,substantially as described. 3. The combination with an outer casingprovided with a draft-opening, of a register controlling the saiddraft-opening, an inner casing, a fuel-supply passage leading throughthe two casings, a closure for the said passage, an air-inlet opening inthe upper end of the inner casing, and a gas-passage leading past thesaid inlet-opening and thence downward and thence upward through theexterior of the inner casing, substantially as described.

4. The combination with an outer casing provided with a draft-inletopening, of a register controlling the said draft-opening, an innercasing provided in the upper end with an air-inlet and provided at thelower end with a passage for the removal of ashes, an upwardly-extendingpartition in the inner casing located below the said air-inlet, ahorizontal partition located above the said ashpassage and at the lowerend of the said partition and having perforations at one side of thesaid partition but imperforate on the other side thereof, and agas-passage leading past the upwardly-extending partition and past thesaid air-inlet and thence downward and thence upward to the exterior ofthe inner casing, substantially as described.

5. The combination with an outer casing provided with a draft-inletopening, of a register controlling the said inlet-opening, an innercasing having two chambers and an air-inlet discharging into bothchambers, an opening connecting the two chambers adjacent to theair-inlet, a discharge-opening leading from one of the chambers, and twopartitions, one in each chamber extending downward from the upper end ofthe casing below the opening connecting the two chambers, substantiallyas described.

6.- The combination with an outer casing provided with a draft-inletopening, of an inner casing provided with two chambers, an openingconnecting the two chambers, an air inlet opening discharging into thetwo chambers across the said connecting-opening, a discharge-openingleading through the inner casing from one of the chambers, the chamberhaving the discharge-opening being provided with an imperforate bottomand the other chamber having a perforated bottom, a closed ash-receivingchamber located below the perforated bottom of the said chamber andprovided with a passage for the discharge of ashes, and a closure forthe said ash-discharge passage, substantially as described.

7. The combination with an outer casing provided with a draft-inletopening, of a register controlling the said opening, an inner casingprovided with two chambers, an opening connecting the two chambers, anair-inlet discharging into the said connecting-opening, a fuel-supplyopening leading through the inner casing into one of the said chambers,adischarge-opening leading through the inner casing from the otherchamber, the chamber having the dischargeopening being provided with animperforate bottom, the chamber having the fuel-supply passage beingprovided with a perforated bottom, an ash-receiving chamber placed so asto receive ashes through the said perforations and having anash-discharge passage leading therefrom, a closure for the saidash-discharge passage, and a closure for the fuel-supply passage,substantially as described.

8. The combination with a casing provided with two chambers having anopening connecting them, two partitions, one in each chamber, extendingdownward from the upper end of the casing past the saidconnecting-opening, an air-inlet between the said two partitions, anoutlet-opening leading from one of said chambers, the chamberhaving theoutlet-opening being provided with an imperforate bottom and the otherchamber having a perforated bottom, of an ash-receiving chamber locatedbelow the perforated bottom of the said chamber and having anash-discharge opening leading therefrom, substantially as described.

9. Acolnbustion-chamber provided with an air-inlet opening in the upperend, two downwardly-extending partitions located one on each side of thesaid air-inlet opening, a partition extending upwardly from the bottomof the chamber, between the said two partitions and above the lower endsthereof, and a discharge-opening in the upper end of the cas ing,substantially as described.

10. A combustion-chamber comprising a. casing provided with twodownwardly-extending partitions, an air-inlet in the casing between thetwo said partitions, an upwardlyextending partition located between thetwo downwardly extending partitions and extending from the bottom of thechamber above the lower ends of the said two partitions, and adischarge-opening in the upper end of the casing, the bottom of thechamber at one side of the upwardly-extending partition being perforatedand imperforate upon the other side thereof, substantially as described.

11. A combustion-chamber provided with an inlet-opening for air in itsupper end,a gas discharge opening also in its upper end, a partitionextending downwardly from the upper end of the chamber and locatedbetween the two. said openings, and a partition extending from thebottom of the chamber upwardly above the lower end of the otherpartition and having its upper end adjacent to the air-inlet opening,substantially as described.

12. A combustion-chamber provided in its upper end with an air-inlet, adamper controlling the said air-inlet, two downwardlyextendingpartitions located one on each side of the said air-inlet, a partitionextending upwardly from the bottom of the said chamber between the twosaid downwardly-extending partitions and above the lower ends thereof,and a discharge-opening at one side of one of the downwardly-extendingpartitions, substantially as described.

In testimony whereof I have signed my name to this specification inpresence of two subscribing witnesses.

CHRISTIAN OLSTED. WVitnesses:

WARREN D. HOUSE, 0. A. CORCORAN.

